How to use expressions to define a dimension relative to another?

Denwen

I have these two holes that I want to create, as shown below. The one on the right is in the middle of that surface (I used midpoint).

I am struggling to define the dimension highlighted. I would like it to be the same distance as the other hole is from the right wall. Is there any way to make this happen?

patrick_mcgowan580

Hi Denwen,

Probably the easiest way to achieve what I think you are trying to do is to use a geomtry contraint to make two reference lines equal. I know my geom is 2d whereas it looks like your sketch maybe on a 3d surface but the approach should work either way.

https://cad.onshape.com/documents/c636c963911f17ee0e6638cb/w/9786fde82e9bf847bf4ea0b0/e/c25bc622fe18de917c081dcb?renderMode=0&uiState=691518f6da1438ef34f5e6a7

Hope this helps,

Paddy

Denwen

Cool, thank you much for this suggestion!